Carbohydrate digestion

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    Created by
    Maddie Clayton

    Cards (6)

    • Carbohydrate digestion in the mouth
      Where: Mouth
      Secretion source: salivary glands
      Enzyme: amylase
      Substrate: starch/glycogen
      Products: maltose
    • Carbohydrate digestion in the duodenum
      Where: extracellular duodenum
      Secretion source: Pancreas via the pancreatic duct
      Enzyme: amylase
      Substrate: starch/glycogen
      Products: maltose
    • Carbohydrate digestion intracellular in the membranes of the microvilli cells
      Where: cells in the duodenum
      Enzyme: maltase, sucrase and lactase
      Substrate: maltose, sucrose and lactose
      Products: alpha glucose, fructose and galactose
    • Carb digestion:
      Amylase is secreted by salivary glands in the mouth, breaking down starch and glycogen into maltose. Amylase denatures in the stomach.
      In extracellular duodenum, starch and glycogen are broken down by amylase from the pancreas via the pancreatic duct, into maltose.
      In intracellular duodenum, maltose, sucrose and lactose and broken down by maltase, sucrase and lactase into alpha glucose, fructose and galactose.
      They travel to the ileum for absorption.
    • Where are the products of carbohydrate digestion absorbed?
      In the ileum into the blood
    • uses of carbs in the body:
      • glucose is absorbed from the blood by the cells for aerobic respiration to produce ATP
      • excess is stored as fat